4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.gnu.org/licenses/gpl-2.0.html
23 * Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
24 * Use is subject to license terms.
27 * This file is part of Lustre, http://www.lustre.org/
28 * Lustre is a trademark of Sun Microsystems, Inc.
46 #define BUFFERSIZE 4096
48 /* This flag controls termination of the main loop. */
49 volatile sig_atomic_t keep_going = 1;
51 /* The signal handler just clears the flag and re-enables itself. */
52 void catch_alarm(int sig)
55 signal(sig, catch_alarm);
58 int main(int argc, char **argv)
61 unsigned char buf[BUFFERSIZE];
63 unsigned int test_time;
65 mode_t mode = S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH;
68 printf("Invalid number of arguments.\n");
69 printf("Usage %s <file> <test_time_in_seconds>\n", argv[0]);
74 test_time = atoi(argv[2]);
76 /* Establish a handler for SIGALRM signals. */
77 signal(SIGALRM, catch_alarm);
79 /* Set an alarm to go off in a little while. */
82 fd = open(file, O_RDWR | O_TRUNC | O_CREAT | O_SYNC | O_LARGEFILE,
85 fprintf(stderr, "Error: Cannot open file named ");
90 memset(buf, 1, BUFFERSIZE);
92 for (i = 0; i < 1024; i++) {
93 rc = write(fd, buf, BUFFERSIZE);
95 fprintf(stderr, "Error: Write error ");
98 } else if (rc != BUFFERSIZE) {
100 "Error: Ddidn't write all data\n");
104 if (ftruncate(fd, 0) < 0) {
105 fprintf(stderr, "Error: Truncate error ");
112 fprintf(stderr, "Error: Cannot close ");